Answer:
<em>The tyres of car wear out gradually, due to the frictional force. Frictional force arises between two objects when they move over one another. In the given cases it arises between the tyre and the surface which it is travelling on.</em>
A. You improve your health by setting as many goals as you can
A sex cell that hasn't been fertilized and has left the ovary would come out during the menstrual cycle under normal circumstances.
The answer is D
2 red and 2 roan
